generate random string for div id

Question

I want to display YouTube videos on my website, but I need to be able to add a unique id for each video that\'s going to be shared by users. So I put this toget

Answer 1

window.btoa(String.fromCharCode(...window.crypto.getRandomValues(new Uint8Array(5))))

Using characters except ASCII letters, digits, '_', '-' and '.' may cause compatibility problems, as they weren't allowed in HTML 4. Though this restriction has been lifted in HTML5, an ID should start with a letter for compatibility.